Agisoft Photogrammetric Software: Basic Training - Getting Acquainted

Overview

The Agisoft Photogrammetric Software for Topcon is an advanced image-based 3D modeling solution aimed at creating professional quality 3D content from still images.

Photogrammetric triangulation

Dense point cloud editing and classification

3D model generation and texturing

Digital terrain or surface model export

Georeferenced orthomosaic export

Multi-spectral imagery processing

General Workflow

Processing of images within the Agisoft Photogrammetric Software for Topcon includes the following main steps:

Loading, inspecting images, and removing unnecessary photos

Aligning photos

Building dense point cloud

Building mesh (3D polygonal model)

Generating texture

Building tiled model

Building digital elevation model

Building orthomosaic

Preferences Settings

Before starting a project, adjusting the program settings is recommended. To open the dialog window, select Tools → Preferences.

Under the General Tab a user can indicate the path to which a processing log can be written. This is useful information in the event of issues that occur which require support during processing.

Under the OpenCL Tab, enable any OpenCL devices detected and reduce the number of active CPU cores by one for each OpenCL device enabled. (If the CPU supports hyper-threading, then two active CPU cores per each device should be disabled).

Application Window

The image to the right is a general overview of the application window, showing a wide range of views and information displayed within the software.

Model View

Ortho View

Photo View

Workspace pane

Reference pane

Photos pane

Model View

The Model view tab is used for displaying 3D data as well as for mesh and point cloud editing. The view of the model depends on the current processing.

Models can be shown as a dense cloud, with class indication or without; or as a mesh in shaded, solid, wireframe or textured modes.

Along with the model, the results of photo alignment can be displayed. These include visualized data in the form of a sparse point cloud and viewing camera positions.

Ortho View

The Ortho view is used for displaying 2D processing results, such as a digital elevation model (DEM) and full resolution orthomosaic.